A blend of natural and synthetic ion exchange resins that selectively remove ammonia, nitrite, and nitrate. In new aquariums, Nitra-Zorb controls the level of toxic ammonia and nitrite during initial development of the biological filter. In established aquariums, it helps control sudden surges in ammonia and nitrite caused by the addition of new fish, or anytime ammonia or nitrite is detected. 128 grams. For use in freshwater aquariums. Use one 128 gram pouch of Nitra-Zorb per 55 gallons of water.
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